document.write( "Question 765446: the average mark obtained by the student of examination is p. the ratio of boy to girls in the class is 5:1. if the average score of boys is p+1 then find average score of the girls
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Algebra.Com's Answer #466230 by ramkikk66(644)![]() ![]() ![]() You can put this solution on YOUR website! Ratio of boys to girls = 5:1\r \n" ); document.write( "\n" ); document.write( "Assume that the number of girls is x\r \n" ); document.write( "\n" ); document.write( "If there are x girls in the class there are 5*x boys \r \n" ); document.write( "\n" ); document.write( "Total number of students = 6*x\r \n" ); document.write( "\n" ); document.write( "Average score for the whole class of 6*x students = p.\r \n" ); document.write( "\n" ); document.write( "So total marks scored by the class = \n" ); document.write( "(Remember that average for all students = total / number of students)\r \n" ); document.write( "\n" ); document.write( "Similarly, Average score of boys = p+1\r \n" ); document.write( "\n" ); document.write( "So total marks scored by boys = \n" ); document.write( "\n" ); document.write( "So, total marks scored only by girls = \n" ); document.write( "\n" ); document.write( "Since there are x girls, average score for the girls = total score for girls / number of girls\r \n" ); document.write( "\n" ); document.write( "= \n" ); document.write( "\n" ); document.write( "Hope you got it :)\r \n" ); document.write( "\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |